Spraying device for flue gas treatment of desulfurization reaction tower
By introducing a combination of diversion and multi-spray mechanisms into the desulfurization reaction tower, the problem of insufficient uniformity of flue gas contact was solved, achieving a more comprehensive flue gas desulfurization effect and protection of components.
Patent Information
- Application Number
- CN202423106644.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-17
AI Technical Summary
When dealing with high-flow-rate flue gas, the existing desulfurization reaction towers suffer from insufficient uniformity in the contact between the spray reaction liquid and the flue gas, resulting in incomplete desulfurization reaction. Furthermore, the high sulfide content of the flue gas increases the working pressure on the reaction tower components.
The design employs a combination of a diversion mechanism and multiple spraying mechanisms, including a top plate, a bottom plate, an impeller plate, and a hollow shaft. The drive mechanism diverts the flue gas and performs zoned spraying between the impeller plates. Combined with the nozzles of the first and second spraying mechanisms, continuous diversion and multiple spraying treatments of the flue gas are achieved.
It improves the comprehensiveness and uniformity of flue gas treatment, enhances the desulfurization effect, reduces the residual sulfides in flue gas, and reduces the pressure on the reaction tower components.
Smart Images
Figure CN223615672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue gas treatment technology, specifically a spraying device for flue gas treatment of desulfurization reaction towers. Background Technology
[0002] A desulfurization reaction tower is a tower-type device used to treat industrial waste gas for desulfurization. Flue gas and absorbent liquid enter the tower from the bottom and top, respectively, and the gas and liquid phases flow counter-currently for mass transfer. At the top, the gas is cleaned of hydrogen sulfide and hydrogen cyanide, while at the bottom, a desulfurized liquid containing reactants is obtained. Desulfurization towers come in various types, including packed towers, air-spray towers, and plate towers. They consist of a circular tower body and packing materials that play a crucial role in mass transfer, and are also equipped with internal spraying and demisting devices.
[0003] In existing desulfurization reaction tower processes, after flue gas enters the tower, it rises and diffuses along the interior. Spray treatment involves spraying the reaction liquid onto the entire or segmented interior space of the tower. If the volume of flue gas entering the tower is large, the uniformity of contact between the sprayed reaction liquid and the flue gas cannot be guaranteed. Therefore, methods such as increasing the flow rate of the sprayed reaction liquid and extending the flue gas flow path are often used to prolong the contact time between the reaction liquid and the flue gas, thereby achieving a better desulfurization reaction effect.
[0004] Secondly, the flue gas entering the reaction tower contains a high content of sulfides. Existing technologies also use spray treatment at the flue gas inlet of the reaction tower, but this cannot effectively guarantee that the spray treatment equipment can have a high-efficiency and comprehensive treatment effect when a large flow of flue gas enters the reaction tower. This not only affects the comprehensiveness of the desulfurization reaction, but also increases the working pressure of other desulfurization treatment components in the reaction tower. Utility Model Content
[0005] The purpose of this invention is to provide a spraying device for treating flue gas from a desulfurization reaction tower, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a spray spraying device for flue gas treatment of a desulfurization reaction tower, comprising a tower body, wherein a driving mechanism is provided inside the tower body, the driving mechanism comprising a hollow shaft, a plurality of second spraying mechanisms and a motor, one end of the hollow shaft being connected to the output end of the motor, and the plurality of second spraying mechanisms being mounted on the surface of the hollow shaft;
[0007] The bottom of the tower body is provided with a flow diversion mechanism, which includes a top plate, a first spray mechanism, a bottom plate and multiple impeller plates. The first spray mechanism is located between the top plate and the bottom plate, and the multiple impeller plates are evenly distributed between the top plate and the bottom plate. The first spray mechanism is interspersed between the multiple impeller plates.
[0008] The first spraying mechanism and the multiple second spraying mechanisms are all connected to the interior of the hollow shaft, and the surfaces of the first spraying mechanism and the multiple second spraying mechanisms are all equipped with uniformly distributed nozzles.
[0009] The bottom of the tower body is provided with a circulation mechanism, and the output end of the circulation mechanism is provided with a connecting pipe.
[0010] Preferably, the connecting pipe is disposed inside the bottom end of the tower body, and the bottom end of the hollow shaft is rotatably installed inside the connecting pipe;
[0011] The input end of the circulation mechanism is connected to the inside of the tower body.
[0012] Preferably, the tower body includes multiple packing layers, multiple perforated plates, and a demister, wherein the demister is located at the upper end of the tower body, and the hollow shaft is rotatably installed inside the demister;
[0013] Each filler layer is located above each perforated plate, and each second spray unit is located above each filler layer.
[0014] Preferably, the tower body further includes a smoke exhaust pipe, a liquid drain pipe, and an air inlet pipe. The smoke exhaust pipe is located on the top surface of the tower body, the liquid drain pipe is located on the bottom surface of the tower body, and the position of the air inlet pipe corresponds to the position of the diversion mechanism.
[0015] Preferably, both the top plate and the bottom plate are fixedly connected to the surface of the hollow shaft, and both ends of each impeller plate are fixedly connected to the surfaces of the top plate and the bottom plate, respectively.
[0016] Preferably, both the top plate and the bottom plate have uniformly distributed through grooves on their surfaces.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. By setting up a diversion mechanism, this utility model achieves the effect of diverting and independently treating the flue gas inlet. It can continuously divert the flue gas at the tower inlet and perform zoned spraying treatment in the diversion space through the first spraying mechanism, effectively improving the flue gas treatment capacity and ensuring the flue gas treatment effect.
[0019] 2. By setting up a second spraying mechanism, this utility model achieves the effect of further improving the comprehensiveness of desulfurization treatment. After the flue gas at the tower inlet is treated by the diversion mechanism, the second spraying mechanism can spray the flue gas again, effectively ensuring the comprehensive treatment effect of the flue gas. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the exploded structure of the parts of this utility model;
[0021] Figure 2This is an exploded structural diagram of the diversion mechanism component of this utility model;
[0022] Figure 3 This is a schematic diagram of the main cross-sectional structure of the tower body of this utility model.
[0023] In the picture:
[0024] 1. Tower body; 11. Exhaust pipe; 12. Packing layer; 13. Mesh plate; 14. Liquid drain pipe; 15. Air inlet pipe; 16. Demister;
[0025] 2. Circulation mechanism; 21. Connecting pipe;
[0026] 3. Diversion mechanism; 31. Top plate; 32. First spray mechanism; 33. Bottom plate; 34. Impeller plate;
[0027] 4. Drive mechanism; 41. Hollow shaft; 42. Second spray mechanism; 43. Motor. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figures 1 to 3 An embodiment of this utility model is provided: a spray spraying device for flue gas treatment of a desulfurization reaction tower, including a tower body 1. A drive mechanism 4 is provided inside the tower body 1. The drive mechanism 4 includes a hollow shaft 41, a plurality of second spraying mechanisms 42 and a motor 43. One end of the hollow shaft 41 is connected to the output end of the motor 43, and the plurality of second spraying mechanisms 42 are all installed on the surface of the hollow shaft 41.
[0030] A diversion mechanism 3 is provided at the bottom of the tower body 1. The diversion mechanism 3 includes a top plate 31, a first spray mechanism 32, a bottom plate 33 and multiple impeller plates 34. The first spray mechanism 32 is located between the top plate 31 and the bottom plate 33. The multiple impeller plates 34 are evenly distributed between the top plate 31 and the bottom plate 33, and the first spray mechanism 32 is interspersed between the multiple impeller plates 34.
[0031] The flue gas to be treated enters the interior of the tower body 1 through the inlet pipe 15. The drive mechanism 4 drives the hollow shaft 41 to rotate through the motor 43. At the same time, the circulation mechanism 2 pumps the treatment liquid at the bottom of the tower body 1 into the hollow shaft 41. The hollow shaft 41 sprays the treatment liquid through the first spray mechanism 32 and the second spray mechanism 42. During the rotation of the diversion mechanism 3 driven by the hollow shaft 41, the flue gas enters between the impeller plates 34. With the rotation of the diversion mechanism 3, the flue gas continuously enters the space between the impeller plates 34. The first spray mechanism 32 independently treats the flue gas in the space between the impeller plates 34. The flue gas after spray treatment flows to the space above the tower body 1 through the through groove on the surface of the top plate 31.
[0032] The first spray mechanism 32 and the multiple second spray mechanisms 42 are all connected to the interior of the hollow shaft 41, and the surfaces of the first spray mechanism 32 and the multiple second spray mechanisms 42 are all equipped with uniformly distributed nozzles; the top plate 31 and the bottom plate 33 are both fixedly connected to the surface of the hollow shaft 41, and the two ends of each impeller plate 34 are fixedly connected to the surfaces of the top plate 31 and the bottom plate 33, respectively.
[0033] Both the top plate 31 and the bottom plate 33 have evenly distributed through slots on their surfaces. The continuous rotation of the diversion mechanism 3 can continuously inject the flue gas entering the tower body 1 into the space between the impeller plates 34. The impeller plates 34 can divert the flue gas, and the space between the impeller plates 34 can be used as a processing unit. In conjunction with the first spraying mechanism 32, the independent processing unit can be sprayed for treatment. Compared with the traditional method of treating a large amount of flue gas as a whole, this method has a more comprehensive treatment and more effective desulfurization effect. It can effectively reduce the problem of high sulfide content in the flue gas when it enters the tower body 1 and insufficient and uneven spraying treatment.
[0034] Tower body 1 includes multiple packing layers 12, multiple mesh plates 13 and demister 16. Demister 16 is located at the upper end of the interior of tower body 1, and hollow shaft 41 is rotatably installed inside demister 16.
[0035] Each packing layer 12 is located above each perforated plate 13, and each second spray mechanism 42 is located above each packing layer 12. The packing layer 12 is a three-dimensional structure with a specific geometry and size, used to increase mass transfer efficiency and throughput, and to ensure the contact area and contact time between flue gas and treated liquid. The tower body 1 also includes a flue pipe 11, a liquid drain pipe 14, and an air inlet pipe 15. The flue pipe 11 is located on the top surface of the tower body 1, the liquid drain pipe 14 is located on the bottom surface of the tower body 1, and the position of the air inlet pipe 15 corresponds to the position of the diversion mechanism 3.
[0036] After passing through the diversion mechanism 3, the flue gas sequentially enters the second spray mechanism 42 and the packing layer 12, and is sprayed with treatment liquid again through the second spray mechanism 42. The treatment liquid comes into contact with the flue gas again, removing residual sulfides in the flue gas again, achieving a more comprehensive flue gas desulfurization effect. After the second spray treatment, the flue gas passes through the demister 16 and is discharged through the exhaust pipe 11. The treatment liquid generated by the spray is deposited at the bottom of the tower body 1 by gravity. The staff can replace and replenish it regularly. The circulation mechanism 2 can circulate the treatment liquid by pumping it through the first spray mechanism 32 and the second spray mechanism 42, realizing the circulation of the treatment liquid through the spraying and deposition at the bottom of the tower body 1.
[0037] A circulation mechanism 2 is provided at the bottom of the tower body 1. A connecting pipe 21 is provided at the output end of the circulation mechanism 2. The connecting pipe 21 is located inside the bottom end of the tower body 1. The bottom end of the hollow shaft 41 is rotatably installed inside the connecting pipe 21. The input end of the circulation mechanism 2 is connected to the inside of the tower body 1. After the flue gas is treated by secondary spraying, it passes through the demister 16 and is discharged through the exhaust pipe 11. The treatment liquid generated by spraying is deposited at the bottom of the tower body 1 by gravity. The staff can replace and replenish it regularly. The circulation mechanism 2 can circulate the treatment liquid by pumping it, so that the treatment liquid is sprayed by the first spraying mechanism 32 and the second spraying mechanism 42 and deposited at the bottom of the tower body 1.
[0038] Working principle: The flue gas to be treated enters the tower body 1 through the inlet pipe 15. The drive mechanism 4 drives the hollow shaft 41 to rotate through the motor 43. At the same time, the circulation mechanism 2 pumps the treatment liquid at the bottom of the tower body 1 to the hollow shaft 41. The hollow shaft 41 sprays the treatment liquid through the first spray mechanism 32 and the second spray mechanism 42. During the rotation of the diversion mechanism 3 driven by the hollow shaft 41, the flue gas enters between the impeller plates 34. With the rotation of the diversion mechanism 3, the flue gas continuously enters the space between the impeller plates 34. The first spray mechanism 32 independently treats the flue gas in the space between the impeller plates 34. The flue gas after spray treatment flows to the space above the tower body 1 through the through groove on the surface of the top plate 31.
[0039] During this process, the continuous rotation of the diversion mechanism 3 can continuously inject the flue gas inside the tower body 1 into the space between the impeller plates 34. The impeller plates 34 can divert the flue gas, and the space between the impeller plates 34 can be used as a processing unit. In conjunction with the first spraying mechanism 32, the independent processing unit is sprayed. Compared with the traditional overall processing of large batches of flue gas, it has a more comprehensive processing and more effective desulfurization effect. It can effectively reduce the problem of high sulfide content in the flue gas when it enters the tower body 1 and insufficient and uneven spraying treatment.
[0040] After passing through the diversion mechanism 3, the flue gas sequentially enters the second spray mechanism 42 and the packing layer 12. The treatment liquid is sprayed again through the second spray mechanism 42, and the treatment liquid comes into contact with the flue gas again, further removing residual sulfides and achieving a more comprehensive flue gas desulfurization effect. The packing layer 12, with its specific geometric shape and size, is three-dimensional and used to increase mass transfer efficiency and throughput, ensuring sufficient contact area and time between the flue gas and the treatment liquid. After the secondary spray treatment, the flue gas passes through the demister 16 and is discharged through the exhaust pipe 11. The treatment liquid generated by the spraying is deposited at the bottom of the tower body 1 by gravity, and can be periodically replaced and replenished by personnel. The circulation mechanism 2 can circulate the treatment liquid, achieving a cycle of spraying and deposition of the treatment liquid through the first spray mechanism 32 and the second spray mechanism 42 at the bottom of the tower body 1.
[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A spraying device for treating flue gas from a desulfurization reaction tower, characterized in that: The tower body (1) includes a drive mechanism (4) inside the tower body (1). The drive mechanism (4) includes a hollow shaft (41), a plurality of second spray mechanisms (42) and a motor (43). One end of the hollow shaft (41) is connected to the output end of the motor (43), and the plurality of second spray mechanisms (42) are all mounted on the surface of the hollow shaft (41). The bottom of the tower body (1) is provided with a diversion mechanism (3). The diversion mechanism (3) includes a top plate (31), a first spray mechanism (32), a bottom plate (33) and multiple impeller plates (34). The first spray mechanism (32) is located between the top plate (31) and the bottom plate (33). The multiple impeller plates (34) are evenly distributed between the top plate (31) and the bottom plate (33), and the first spray mechanism (32) is inserted between the multiple impeller plates (34). The first spraying mechanism (32) and the multiple second spraying mechanisms (42) are all connected to the interior of the hollow shaft (41), and the surfaces of the first spraying mechanism (32) and the multiple second spraying mechanisms (42) are all equipped with uniformly distributed nozzles; The bottom end of the tower body (1) is provided with a circulation mechanism (2), and the output end of the circulation mechanism (2) is provided with a connecting pipe (21).
2. The spray spraying device for flue gas treatment in a desulfurization reaction tower according to claim 1, characterized in that: The connecting pipe (21) is located inside the bottom end of the tower body (1), and the bottom end of the hollow shaft (41) is rotatably installed inside the connecting pipe (21); The input end of the circulation mechanism (2) is connected to the inside of the tower body (1).
3. The spraying device for flue gas treatment in a desulfurization reaction tower according to claim 1, characterized in that: The tower body (1) includes multiple packing layers (12), multiple mesh plates (13) and a demister (16). The demister (16) is located at the upper end inside the tower body (1), and the hollow shaft (41) is rotatably installed inside the demister (16). Each filler layer (12) is located above each perforated plate (13), and each second spray mechanism (42) is located above each filler layer (12).
4. The spraying device for flue gas treatment in a desulfurization reaction tower according to claim 1, characterized in that: The tower body (1) also includes a smoke exhaust pipe (11), a liquid drain pipe (14) and an air inlet pipe (15). The smoke exhaust pipe (11) is located on the top surface of the tower body (1), the liquid drain pipe (14) is located on the bottom surface of the tower body (1), and the position of the air inlet pipe (15) corresponds to the position of the diversion mechanism (3).
5. A spraying device for treating flue gas from a desulfurization reaction tower according to claim 1, characterized in that: The top plate (31) and the bottom plate (33) are both fixedly connected to the surface of the hollow shaft (41), and the two ends of each impeller plate (34) are fixedly connected to the surfaces of the top plate (31) and the bottom plate (33) respectively.
6. The spraying device for flue gas treatment in a desulfurization reaction tower according to claim 1, characterized in that: Both the top plate (31) and the bottom plate (33) have uniformly distributed through grooves on their surfaces.